In the USA, the price for Genos2 was originally $6599 on the Yamaha USA website, but that quickly dropped to a street price shown of $5699.99 as shown on Yamaha USA, Amazon, Sweetwater, Guitar Center, Woodwind Brasswind, Kraft Music, etc. That is the price I paid for mine a few weeks ago. I have not seen any changes in street prices on any web sites.
Pricing is generally a function of supply and demand. In this case, it could also be a function of currency fluctuations between JPYen, Euro, GPB, USD, etc.